Improvement in pans for evaporating sugar-juice



NITED STATES WHEELER HEDGEs, AOF CHICAGO, ILLINOIS, YAssienoa 'ro IIIIiIsELu AND r. w. GATES, OF sAMn PLAGE.

IMPROVEMENTLIN PANS FOR EvAPORATlNe SUGAR-Juice;

Specification forming part of Letters Patent. No. 26,325, datedHnxmnheuLl'd-M I'o all 1071/011@ it may concern:

Be it. known that l, WHEELER HEDGES, of

Chicago, in the county of Cook and State lot' i Illinois, have invented a new and Improved Evaporator; and I do hereby 'declare that the following is a full, clear, and exact descriptiouof the construction and operation of the same, reference being `had to the annexed drawings, making a part of this specification, in which- Figure l is a birds-ey'e view of the same. Fig.l2 is a side elevation. Fig.` 3 is a transverse section of the evaporating-pau, showing the pipes E E and side of the stops Q and troughs L and L.

The letters of reference refer lo the same parts in each figure.

`A is the arch. most convenient, and wide enough to allow l(he horizontal bottom of the pan tocome tothe insides, and long enough to `support the pan and theheaters, and high enough to allow sufficient firebox and gratebars for thel kind of fuel used. i i

B is the evaporating-pan,of any convenient size, made with a horizontal bottoni,with the length about six times the width of the bottom, and of copper or other suitable material. The sides should be about eighteen inches wide, and united to the bottom at theinner and,lower edge, with the outer edge raised above the plane of the bottom about five inches, thus forming flatly dared sides or beaches that extend outward beyond the arch, so as not to be exposed to the intense heat, thus causing the foam to condense as it flows out toward the edge of the sides. The end of the pan may be vertical and about iive inches in height. The discharging end of the pan should be about three-eighths of an inch the lowest.

C and G are heatingreceivers, made square in forni and any capacity required. 1The two, when placed side by side, should be about; twice the width of the inside of the'arch, and should be placed atv the end ofthe pan B,` enough higher than the top of the pan, so that their contents may be discharged into the pan B.

Dis a defecating-apartment of the evapo-` It is made of brick, when j i the right and the other tothe left, and bothi return back to the same eudtheystartedfrom, i f thus returning and refreturning until the boti l rating-pan. Its bottom sliouldbe on thsanie plane withthe bottom ofthe pan. The sides are ashigh as the sides of thepan. *Itis square in form, and the size should be about the same as the width of the bottoni of the pan,without` any separating-partition, thereby allowing a f free passage between them, and the whole. must project outside of the arch, so as to be but slightly acted upon by the heat. A p. E and E are separatelayers of lsteam-pipes f y made of any suitable metal.l The steam is conducted into these pipes bythe pipe F,

which is provided with a regulating-valve, a. This pipe extends tothe` middle of the end next to the hea-ters, where` it branches and'fis ,.3 united with thepipes E and E at the points y, O O. These two pipes extend theentire` i PATENT OFFICE., i

length of the bottom. One is there turned toi toni ofthe pan is covered or the amountof pipe is laid that is required.

charge of the condensed steam.`

F is a steam-pipe thatconducts the steam I from the generator to the pipes E and E.`

" G is a stop-cock at the end of theypipes E "i,

and E.

plied with the exhauststeam from' the`engine.`

rlhese pipes are used to warm the cold uidfi before it enters the` defecator D, and `to condense tlie waste steam, thereby saving the wag` i ter in a heated state to be used again.

I is the inducting-pipe that `conducts they steam intoythe pipes H andiH. H

J is the eduction-pipes, provided with stopf; 1

The nishing 1. ends of both pipes pass out ofthe pan andare.. provided with stop-cocks to regulate the discocks to discharge the condensed steam from the pipes H and H. w

K is a chimney for the arch.

L and L aretroughsplacedunderorattached "f to the sides of the pan P l?. `'Iheir use is to rei eeive the scum that is scraped off `the sides Pj` IP, thus saving it for vinegar or other purposes. l is a discharge-faucet used to draw ofi' thel contents of the evaporatingfpan B.

When the juice is sufficiently heated, draw it N and O are pipes provided with faucets that conduct the contents of the heaters into the defecator D.

P and Pare the broad flaring sides or beaches of the evaporating-pan.

Q and Q are stop-boards fitted to the inside of the pan B, and are used loosely.V Their use is to prevent the foam passing too frcel y from one end of the pan to the other.

To use my invention for evaporating canejuice for making sirup or sugar, fill the heaters, then let the steam into the Apipes H H.

into the defecatorv and pan until the pipes E E are nearly covered, then let the steam into the pipes E and E, when apowerl'ul ebullition will commence, and by means of the direct steam entering the middle pipes first, that portion will be the hottest, so that this and the flaring sides P and P will cause the foam of the boiling juice to rise highest in the middle and flow toward the sides P and P, where the remaining scum will collect, and can be readily removed with a scraper into the troughs, thereby effectually eradicating all substances that would inj ure the quality of the sirup or sugar.

The peculiar construction and operation of the defecator D is such that by reason of .the remoteness from the heat of that part of the defeeator D where the juice is received no cbullition takes place; still it is kept near the boiling-point. Consequently as fast as thej uice falls in an almost immediate and perfect defe-' cation takes place. The greenzscum is prevented from fiowing out of the defecator by the strong current of ebullition setting in, enabling lne to remove the scum before it is boiled in the sirup, thereby avoiding the deleterious influence that would ensue by extracting the juice of the fibrous substance or scum.

It being impossible to make a good article of sirup or sugar without a rapid evaporation, I have provided a fire apparatus, as above specified, to aid the steam to facilitate the evaporation, when required, and it may be used separately when the steam apparatus should be injured by accidentor could not be conveniently used, so that the manufacturer could proceed with his business. Wrhen the above op eration has progressed a short time, the sirup at the discharging end of the pan will be of a proper density to draw off by means of the discharge-faucet, as fast as the sirup or sugar acquires the proper density, always endeavoring to keep the sirup about one inch deep in the pan.

What I claim as my invention, and desire to secure by Letters Patent, is-

l. The arrangement of the pipes E E with the pipe F in the pan.Y B, so that the application ofthe steam to the pipes E E will cause the greatest ebullition, and the foam to rise highest longitudinally in the middle of the pan B, for the purpose of causing all impurities to be deposited upon the flaring sides PYP of the pan B.

2. The'construction and application of the flaring sides or beaches P and P, that by their great obliqueness retain all the scum thrown the evaporator, as described, and for the purpose set forth.

` .WHEELER rinnens.

Vitnesses:

HENRY Kommun, CHARLES, KE'rcr-IUM. 

